CN117156250B - Driving device, camera module and electronic equipment - Google Patents

Driving device, camera module and electronic equipment Download PDF

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Publication number
CN117156250B
CN117156250B CN202311402285.7A CN202311402285A CN117156250B CN 117156250 B CN117156250 B CN 117156250B CN 202311402285 A CN202311402285 A CN 202311402285A CN 117156250 B CN117156250 B CN 117156250B
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CN
China
Prior art keywords
conductor
carrier
magnetic field
drive
abnormal sound
Prior art date
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Active
Application number
CN202311402285.7A
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Chinese (zh)
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CN117156250A (en
Inventor
韩文亚
屈艳军
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Honor Device Co Ltd
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Honor Device Co Ltd
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Publication date
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Priority to CN202311402285.7A priority Critical patent/CN117156250B/en
Publication of CN117156250A publication Critical patent/CN117156250A/en
Application granted granted Critical
Publication of CN117156250B publication Critical patent/CN117156250B/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals

Abstract

The embodiment of the application provides a drive arrangement, module and electronic equipment make a video recording, drive arrangement includes drive casing, carrier and abnormal sound suppression subassembly, and the carrier removes to set up in drive casing along first direction to be configured to bear the weight of the camera lens. The first direction is parallel to the optical axis direction of the lens. The abnormal sound suppression component is positioned at the side of the carrier in the first direction. The abnormal sound suppression assembly comprises a magnetic field piece and an energizing conductor, wherein one of the magnetic field piece and the energizing conductor is assembled on the carrier, and the other magnetic field piece and the energizing conductor are assembled on the driving shell. The energizing conductor is configured to generate a magnetic field opposite to the magnetic field member when the carrier moves in the first direction beyond a preset stroke toward a side where the abnormal sound suppression assembly is located, so as to reduce an impact force of the carrier on the drive housing. The driving device can inhibit the shaking abnormal sound generated by the driving device under the shaking scene when ensuring the focusing function of the camera shooting module, and the use experience of a user on the electronic equipment is improved.

Description

Driving device, camera module and electronic equipment
Technical Field
The application relates to the technical field of camera modules, in particular to a driving device, a camera module and electronic equipment.
Background
The camera module has been widely used in many electronic devices such as mobile phones and tablet computers because of supporting many functions such as photographing and video recording.
The camera shooting module comprises a driving device and a lens, wherein the driving device comprises a driving shell and a carrier for carrying the lens, and the carrier can be arranged in the driving shell in a moving manner along the thickness direction of the driving shell, so that the lens can be driven to move relative to the driving shell along the thickness direction of the driving shell when the carrier moves in the driving shell, and the focusing function of the camera shooting module is realized. The related art driving device is provided with a ball or a linear guide rail therein, and the ball or the linear guide rail can be used as a moving medium when the carrier moves in the driving housing, so as to facilitate the movement of the carrier in the driving housing. However, when the camera module is in a shaking scene, the carrier can strike the driving shell and generate larger shaking abnormal sound, so that the use experience of a user on the electronic equipment is seriously affected.
Therefore, how to suppress the abnormal vibration generated by the carrier on the premise of ensuring the focusing function of the camera module has become a technical problem to be solved.
Disclosure of Invention
The application provides a drive arrangement, module and electronic equipment make a video recording, when guaranteeing the function of focusing of module of making a video recording, can restrain drive arrangement and rock the abnormal sound that rocks that produces under rocking the scene, promote user's use experience to electronic equipment.
A first aspect of an embodiment of the present application provides a driving device, including:
a drive housing;
a carrier movably disposed in the driving housing in a first direction and configured to carry a lens; the first direction is parallel to the optical axis direction of the lens;
the abnormal sound suppression assembly is positioned at the side of the carrier in the first direction; the abnormal sound suppression component comprises a magnetic field piece and an energizing conductor, one of the magnetic field piece and the energizing conductor is assembled on the carrier, and the other magnetic field piece and the energizing conductor are assembled on the driving shell; the energizing conductor is configured to generate a magnetic field opposite to the magnetic field member when the carrier moves in the first direction beyond a preset stroke toward a side where the abnormal sound suppression assembly is located, so as to reduce an impact force of the carrier on the drive housing.
The driving device of the embodiment of the application not only can realize the assembly of the lens of the camera module on the driving device through the arrangement of the carrier, but also can drive the lens to move along the optical axis direction relative to the driving shell through the movement of the carrier along the first direction relative to the driving shell, so that the focusing function of the camera module is realized.
On the basis, through the arrangement of the magnetic field piece and the electrified conductor in the abnormal sound suppression assembly, as one of the magnetic field piece and the electrified conductor is assembled on the carrier, the other is assembled on the driving shell, so that the abnormal sound suppression assembly is assembled in the driving shell, and meanwhile, as the electrified conductor is configured to generate a magnetic field opposite to the magnetic field piece when the carrier moves to the side where the abnormal sound suppression assembly is located in the first direction beyond a preset stroke, due to the existence of the magnetic field generated by the electrified conductor and the magnetic field of the magnetic field piece, repulsive force can be generated between the electrified conductor and the magnetic field piece, the repulsive force can apply a reverse acceleration to the carrier, and the repulsive force has a counteracting effect on the acceleration when the carrier moves to the side where the abnormal sound suppression assembly is located, so that the speed and the impact force when the carrier is impacted by the driving shell are reduced, the abnormal sound generated when the driving device is located in a shaking scene is reduced, and the use experience of the electronic equipment by a user is improved.
In some alternative embodiments, the energized conductor has a first conductor and a second conductor that are disconnected;
the abnormal sound suppression assembly further comprises a conducting piece, the conducting piece is located at the disconnection position of the first conductor and the second conductor and is configured to conduct the first conductor and the second conductor when the carrier moves towards the side where the abnormal sound suppression assembly is located in the first direction and exceeds a preset stroke, so that the electrified conductor generates a magnetic field, repulsive force is generated between the electrified conductor and the magnetic field piece, impact force generated when the carrier impacts the driving shell is reduced through the repulsive force, the electrified conductor is open-circuited between the first conductor and the second conductor when the carrier does not move or the moving stroke does not exceed the preset stroke, and power consumption of the driving device is not influenced when the electrified conductor influences movement of the carrier in the preset stroke.
In some alternative embodiments, the first conductor includes a coil portion configured to generate a magnetic field upon conduction with the second conductor so as to generate a repulsive force between the coil portion and the magnetic field member.
In some alternative embodiments, the coil part and the magnetic field member are disposed opposite to each other with an overlap region in the first direction so that the magnetic field generated by the coil part and the magnetic field generated by the magnetic field member can overlap each other in the first direction, thereby generating a repulsive force between the coil part and the magnetic field member.
In some alternative embodiments, the magnetic field member is positioned within the coverage of the coil portion such that the coil portion completely covers the magnetic field member to increase the repulsive force between the coil portion and the magnetic field member.
In some alternative embodiments, the first conductor comprises at least one coil portion, enabling a greater diversity of the structure of the first conductor and the magnetic field strength of the magnetic field generated, so as to provide different magnitudes of opposing accelerations to the carrier; the second conductor is a straight conductor, so that the conduction between the current-carrying conductor and the driving circuit board is realized, and the structure of the current-carrying conductor can be simplified.
In some alternative embodiments, the magnetic member includes a magnetic member having a pair of poles of opposite polarity in a first direction such that there is only a repulsive force between the magnetic member and the magnetic field generated by the coil portion to ensure that the repulsive force is capable of providing a reverse acceleration to the carrier.
In some alternative embodiments, the winding plane of the coil part is perpendicular to the first direction, and the magnetic pole of the magnetic field which can be generated by the coil part after the coil part is electrified can be located in the first direction, and meanwhile, the direction of the current in the coil part is controlled, so that the coil part can generate the magnetic field which is opposite to the magnetic field piece.
In some alternative embodiments, the magnetic field member is assembled on one side of the carrier in the first direction, and at least part of the magnetic field member is embedded in the carrier, so as to realize the assembly of the magnetic field member on the carrier;
the energizing conductor is attached to the inner wall of one side of the driving shell facing the magnetic field piece, so that the assembly of the energizing conductor on the driving shell is realized, and meanwhile, the relative arrangement of the magnetic field piece and the energizing conductor in the first direction can be realized conveniently. In addition, the conductive member can enhance the conductive effect of the conductive member on the first conductor and the second conductor by attaching the conductive conductor to the drive housing.
In some alternative embodiments, the conducting member is located at a side of the first conductor and the magnetic field member, which faces the second conductor, so that the conducting member can utilize a height difference between the coil part and the second conductor in the first direction to realize assembly of the conducting member in the driving housing, and can avoid the conducting member from blocking movement of the carrier in the first direction.
In some alternative embodiments, the conductive member is mounted on an inner wall of the drive housing;
the carrier is abutted with the conducting piece when moving towards one side where the conducting piece is located along the first direction and exceeds a preset stroke, and the conducting piece is pushed to elastically deform towards one side where the breaking part is located so as to conduct the first conductor and the second conductor, so that on the basis that the conduction of the electrified conductor and the driving circuit board is realized, the first conductor can generate a magnetic field, the movement of the carrier can be buffered, a good shaking abnormal sound inhibiting effect is obtained, and the conducting piece can conveniently conduct the first conductor and the second conductor again.
In some alternative embodiments, the conducting member has an elastic conducting portion, and the elastic conducting portion includes a cantilever that is elastically connected to the inner wall of the driving housing and is located at the disconnection, and the cantilever is located at a side of the second conductor facing the carrier and is disposed at a distance from the second conductor;
the cantilever is configured to be abutted with the carrier and move towards the side where the disconnection is located under the pushing of the carrier so as to conduct the first conductor and the second conductor, so that the conduction conductor can be conducted with the driving circuit board only when the carrier moves to the side where the conduction piece is located beyond a preset stroke.
In some alternative embodiments, the cantilever is a planar structure that covers the first conductor and the second conductor so as to enhance the conductive effect of the cantilever on the first conductor and the second conductor.
In some optional embodiments, the elastic conducting part further comprises a bending arm connected with the cantilever, the bending arm comprises at least one bending section bending towards one side of the carrier, so that the bending section can elastically deform and move towards the break under the pushing action of the carrier, and the cantilever is driven to move towards one side of the break, so that the first conductor and the second conductor are conducted, and meanwhile, the movement of the carrier can be buffered to a certain extent, the time that the repulsive force provides reverse acceleration for the carrier is prolonged, and a good shaking abnormal sound inhibiting effect is obtained.
In some alternative embodiments, at least one of the cantilever and the bending arm is arranged in parallel on the carrier, so that the first conductor and the second conductor are conducted simultaneously, and the conducting piece can be more diversified, so as to meet the requirements of the driving device on different structures of the conducting piece.
In some optional embodiments, the distance between the side of the elastic conduction part facing the carrier and the carrier is smaller than the distance between the coil part of the energized conductor and the magnetic field element and is larger than the preset stroke of the carrier, so that when the carrier moves towards the side where the abnormal sound suppression component is located in the first direction, the carrier can be preferentially abutted with the elastic conduction part, and meanwhile normal movement of the carrier in the preset stroke can be ensured, so that the focusing function of the camera module is realized.
In some optional embodiments, the conducting member is assembled on the carrier, and is configured to conduct the first conductor and the second conductor when the carrier moves towards one side of the energized conductor in the first direction beyond a preset stroke, so that the inhibiting effect of shaking abnormal sound can be achieved, and normal movement of the carrier in the preset stroke in the driving housing is not affected, so that the focusing function of the camera module is ensured.
In some optional embodiments, the conducting element is a conductive foam, a metal element or a spring sheet, so that the structure of the conducting element can be more diversified while the first conductor and the second conductor are conducted, so as to adapt to driving devices with different structures.
In some alternative embodiments, when the energizing conductor generates a magnetic field, gaps are formed between the energizing conductor and the magnetic field piece so as to prevent the magnetic field piece from colliding with the energizing conductor and damaging the energizing conductor.
In some optional embodiments, at least one group of abnormal sound suppression components are arranged on two sides of the carrier in the first direction, so that when the carrier moves to different sides of the carrier in the first direction relative to the driving shell beyond a preset stroke, the shaking abnormal sound generated when the carrier impacts the driving shell can be reduced under the action of the corresponding abnormal sound suppression components.
In some optional embodiments, the abnormal sound suppressing components located on the same side of the carrier are symmetrically arranged in the driving shell, so that larger reverse acceleration is provided for reverse movement of the carrier, and stability of the carrier during movement can be enhanced while the abnormal sound suppressing effect is enhanced.
In some alternative embodiments, the drive apparatus further comprises a drive assembly for driving the movement of the carrier in the first direction, the drive assembly comprising a drive circuit board, the energized conductor being electrically connected to the drive circuit board so that the energized conductor can be energized by the drive circuit board while driving the movement of the carrier relative to the drive housing in the first direction by the drive assembly.
In some alternative embodiments, the inner wall of the drive housing has a sliding slot in a first direction, the carrier has a slide member at a position corresponding to the sliding slot, and the slide member is mounted in the sliding slot so that the carrier is slidably mounted in the drive housing to facilitate movement of the carrier in the first direction.
In some optional embodiments, the driving device is a ball motor, so that the abnormal vibration generated by the ball motor in the vibration scene can be restrained through the arrangement of the abnormal vibration restraining component, and the use experience of a user on the electronic equipment is improved.
The second aspect of the embodiment of the application provides a camera shooting module, the camera shooting module comprises a lens and any driving device, the lens is assembled on a carrier of the driving device, focusing function of the camera shooting module is achieved, and meanwhile shaking abnormal sound generated by impact of the carrier and a driving shell of the driving device can be reduced through the abnormal sound suppression assembly.
The third aspect of the embodiment of the application provides electronic equipment, and the electronic equipment includes the casing and the above module of making a video recording, and the module of making a video recording is installed on the casing, when realizing the function of focusing of the module of making a video recording, through the setting of abnormal sound suppression subassembly, can promote the user and experience electronic equipment's use.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 2 is a partially disassembled schematic illustration of an electronic device according to an embodiment of the present application;
FIG. 3 is an exploded view of a camera module according to the related art;
FIG. 4 is a cross-sectional view of the drive device of FIG. 3;
fig. 5 is a schematic structural diagram of a driving device according to an embodiment of the present application at a first view angle;
fig. 6 is a schematic structural diagram of a driving device according to an embodiment of the present application at a second view angle;
FIG. 7 is a schematic diagram of a magnetic field generated by a magnetic field member according to an embodiment of the present disclosure;
FIG. 8 is a schematic diagram of a magnetic field generated by an energized conductor according to an embodiment of the present application;
FIG. 9 is an exploded view of a driving device according to an embodiment of the present disclosure;
fig. 10 is a partial schematic view of a driving device according to an embodiment of the present application;
FIG. 11 is a schematic diagram of a portion of another driving apparatus according to an embodiment of the present disclosure;
FIG. 12 is a perspective view of the drive device of FIG. 11;
FIG. 13 is a schematic illustration of the position of a magnetic field element and a first conductor according to an embodiment of the present application;
FIG. 14 is a cross-sectional view of FIG. 5 in the direction B-B;
fig. 15 is an enlarged view of fig. 14 at C;
Fig. 16 is a schematic diagram of positions of a conductive member and a conductive conductor according to an embodiment of the present application.
Reference numerals:
100-an electronic device;
1-a middle frame; 11-a middle plate; 12-frame; 2-a rear cover; 21-a lens cover plate; 3-a display screen; 4-a main circuit board; 5-a camera module; 51-lens;
52-a driving device; 521-a drive housing; 5211-upper housing; 5212-lower housing; 5213-chute; 5214-first avoidance port; 5215-a second evasion port;
522-a carrier; 5221-slides; 5222-balls; 5223-grooves;
523-magnetic field piece;
524-energizing conductors; 5241-first conductor; 5242-second conductor; 5243-coil part; 5244-winding plane;
525-a pass-through; 5251-resilient conductive portion; 5252-cantilever; 5253-bending arms; 5254-bending section; 5255-abutment section; 5256-resilient arms;
526-a drive circuit board;
53-an optical filter;
54-an image sensor;
55-flexible electrical connection.
Detailed Description
The terminology used in the description section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.
For ease of understanding, related art terms related to the embodiments of the present application are explained and explained first.
Focusing, also called focusing, can be understood as the process of changing the object distance and the image distance of a camera or other image pickup devices in the process of photographing or shooting, so that the photographed object is imaged clearly.
Object distance refers to the distance of an object from the optical center of a lens in a camera or other image capturing device.
Image distance refers to the distance between the image and the optical center of the lens. The conjugate relation exists between the object distance and the image distance, and the farther the object distance is, the closer the image distance is; conversely, the closer the object distance, the more distant the image distance.
The optical axis refers to a straight line passing through the center of each lens in the lens.
The embodiment of the application provides an electronic device, which may include, but is not limited to, an electronic device with a shooting function, such as a mobile phone, a tablet computer (i.e., pad), a Virtual Reality (VR) device, a notebook computer, a personal computer (personal computer, PC), an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a handheld computer, a smart wearable device, and the like. The smart wearable device may include, but is not limited to, a smart watch, a smart bracelet.
The structure of the electronic device according to the embodiments of the present application will be further described below by taking a mobile phone as an example.
Fig. 1 and 2 show an overall structure and a partially disassembled schematic view of an electronic device 100, respectively. Referring to fig. 1 and 2, an electronic device 100 provided in an embodiment of the present application may include a housing, where the housing includes a middle frame 1 and a rear cover 2, and the rear cover 2 is covered and connected to one side of the middle frame 1, and forms a housing of the electronic device 100 with the middle frame 1, and provides a structural frame for the electronic device 100.
With continued reference to fig. 2, the middle frame 1 includes a middle plate 11 and a side frame 12 that are connected to each other, and the side frame 12 may be a square ring structure formed by a plurality of side frames that are connected end to end. The frame 12 is provided around the peripheral edge of the middle plate 11 and connected to the peripheral edge of the middle plate 11. The rear cover 2 is arranged on one side of the middle frame 1 in a covering way and is connected with the side frame 12, so that the rear cover 2 is arranged and fixed on the middle frame 1.
With continued reference to fig. 2, the electronic device 100 may further include a display 3, where the display 3 may be disposed on a side of the middle frame 1 opposite to the rear cover 2 and connected to the bezel 12, so as to implement setting and fixing of the display 3 on the middle frame 1. The display 3 may provide a display interface for the electronic device 100 as well as an interactive interface with a user.
With continued reference to fig. 2, the rear cover 2 may enclose a housing cavity with the middle frame 1 for housing a circuit board (not shown), a battery (not shown) and the like of the electronic device 100. The circuit board comprises a main circuit board 4. The main circuit board 4 typically carries a processor module, a System on Chip (SoC), a memory module, a communication module, a radio frequency module, a power management module, and the like. The main circuit board 4 is positioned in the accommodating cavity enclosed by the rear cover 2 and the middle frame 1. The display 3 may be electrically connected to the main circuit board 4, and may be used to display various information and also to receive information input by a user. The circuit board also includes a secondary circuit board (not shown) on which the modules, such as microphones, speakers, etc., are typically carried. The arrangement of the main circuit board 4, the secondary circuit board and the battery in the accommodating cavity can be found in the existing electronic device 100 such as a mobile phone, and is not further limited herein.
With continued reference to fig. 2, the electronic device 100 may further include a camera module 5, where the camera module 5 may be electrically connected to the main circuit board 4, so that when a user inputs a photographing instruction, the camera module 5 can be controlled by the main circuit board 4 to photograph an image, thereby implementing a photographing function of the electronic device 100.
Fig. 2 shows that an imaging module 5 is provided in the electronic device 100. It should be noted that, in practical applications, the number of the camera modules 5 is not limited to one, and the number of the camera modules 5 may be two or more. To enhance the shooting performance of the electronic device 100, a plurality of camera modules 5 are generally disposed in the electronic device 100, and the number of camera modules 5 may be three, four, five, or the like. Some of the camera modules 5 may be located in the accommodating cavity to form a rear camera module, and other camera modules 5 may be located between the display screen 3 and the middle frame 1 and constitute a front camera module. In the present application, the specific positions of the front camera module and the rear camera module in the electronic device 100 are not further limited.
Fig. 3 shows an exploded view of one type of camera module 5a in the related art electronic device to facilitate understanding of the structure of the camera module 5 a. Referring to fig. 3, the image capturing module 5a includes a lens 51, a driving device 52a, an optical filter 53, and an image sensor 54. The lens 51 is typically made up of one or more stacked lenses (e.g., lenses). The drive device 52a includes a drive housing 521a and a carrier 522a, and the carrier 522a may be located within the drive housing 521 a. One part of the lens 51 is mounted in the carrier 522a of the driving device 52, and the other part is exposed outside the driving device 52a to realize the assembly of the lens 51 in the image pickup module 5 a. The filter 53 and the image sensor 54 are sequentially disposed on the light-emitting side of the lens 51. The image sensor 54 may be electrically connected to the main circuit board 4 of the electronic device 100 through a flexible electrical connection 55. The flexible electrical connection 55 may include, but is not limited to, a drive circuit board 526. Light outside the electronic device 100 enters the lens 51 through the lens cover plate 21 on the rear cover 2, and after being emitted through the lens 51, the light can sequentially pass through the optical filter 53 and the image sensor 54, and after being processed by the image sensor 54, an image is formed, so that the shooting function of the shooting module 5a is realized.
Fig. 4 shows a cross-section of the drive 52a of fig. 3, which can be seen in section A-A of fig. 3. Referring to fig. 4, a carrier 522a is provided to move in the Z direction within a driving housing 521a in the related art so that the carrier 522a moves relative to the driving housing 521a in the thickness direction of the driving housing 521a when the electronic apparatus 100 photographs a subject. The thickness direction of the driving case 521a may be referred to as the Z direction. Since the optical axis direction of the lens 51 is parallel to the thickness direction of the driving housing 521 a. Therefore, when the carrier 522a moves along the thickness direction of the driving housing 521a relative to the driving housing 521a, the lens 51 can be driven to move along the optical axis direction thereof, so as to realize the focusing function of the camera module 5a, thereby enhancing the definition of the image and meeting the higher requirement of the user on the shooting quality of the electronic device.
With continued reference to fig. 4, to facilitate movement of the carrier 522a in the Z direction, the drive housing 521a is provided with a chute 5213 in the Z direction, the carrier 522a is provided with balls 5222 or linear guides at positions corresponding to the chute 5213, and the drive 52a with the balls 5222 disposed within the chute 5213 may also be referred to as a ball motor. The balls 5222 or the linear guide rail are slidably disposed in the corresponding slide grooves 5213 and serve as a moving medium when the carrier 522a moves in the driving housing 521a so as to guide the movement of the carrier 522a in the Z direction, and the resistance of the carrier 522a on the driving housing 521a can be reduced so as to facilitate the movement of the carrier 522a in the driving housing 521a while improving the accuracy of the movement of the lens 51 in the optical axis direction.
However, when the driving device 52a is not operated, if the driving device 52a is shaken manually, the carrier 522a may strike the inner wall of the driving housing 521 and generate a large rattle noise. For this purpose, the tester performs a shake test on the camera module 5 a. In the shake test, a tester manually shakes one of the camera modules 5a under a certain acceleration and frequency, so as to collect abnormal shake generated by the camera module 5a through a sound collecting device (such as a microphone). The test results show that the maximum loudness of the camera module 5a at about (about/near) 5cm from the sound collection device is about 60dB when the maximum acceleration is 10g and the maximum frequency is about 3-5 Hz. When the distance between the camera module 5a and the sound collection device is closer, the abnormal shaking sound generated in the shaking scene is larger. When the user shakes the existing electronic equipment in a short distance, and the distance between the existing electronic equipment and the user is short, the shaking abnormal sound generated by the camera shooting module 5 can seriously influence the use experience of the user on the existing electronic equipment.
Therefore, how to ensure that the camera module 5a suppresses the abnormal vibration generated by the carrier 522a on the premise of realizing the focusing function has become a technical problem to be solved.
In view of this, the application provides a drive arrangement, through the setting of the interior abnormal sound suppression subassembly of drive arrangement, when the carrier in the drive arrangement moves in the drive casing and surpasses the default journey, can reduce the impact of carrier and drive casing to the drive arrangement produces the suppression effect to the abnormal sound that rocks that drive arrangement produced under rocking scene (like drive arrangement manual shake drive arrangement when not working). Therefore, the driving device of the present application can replace the driving device of the related art, and when applied to the camera module 5 and the electronic device 100, the driving device can improve the use experience of the user on the electronic device 100 while realizing the focusing function of the camera module 5.
The structure of the driving device of the present application will be further described with reference to the drawings and embodiments.
Fig. 5 and 6 show a respective structural view of the drive 52 at different angles of view. Referring to fig. 5 and 6, the driving device 52 includes a driving housing 521 and a carrier 522. Wherein the carrier 522 is movably disposed within the drive housing 521 in a first direction and is configured to carry the lens 51. The structure of the lens 51 may be referred to in the above description, and will not be described herein. The first direction is parallel to the optical axis direction of the lens 51. For example, the first direction may be the thickness direction of the driving housing 521 or the optical axis direction of the lens 51, and specifically, the Z direction may be referred to.
By the arrangement of the carrier 522, not only can the assembly of the lens 51 on the driving device 52 be achieved, but also the lens 51 can be driven to move simultaneously when the carrier 522 moves in the first direction relative to the driving housing 521, so that the lens 51 moves in the optical axis direction relative to the driving housing 521. When the driving device 52 is applied to the image pickup module 5, the focusing function of the image pickup module 5 can be realized by the movement of the lens 51 in the optical axis direction.
With continued reference to fig. 5 and 6, the carrier 522 is an annular structure that carries the lens 51 and that conforms (is the same or similar) to the shape of the circumferential outer wall of the lens 51, which may include, but is not limited to, a square annular or circular annular structure. The assembly position of the lens 51 on the carrier 522 may be referred to the description of the related art above, and will not be repeated here.
The lens 51 may be detachably coupled to the carrier 522 when mounted on the carrier 522 to facilitate replacement of the lens 51. For example, the lens 51 may be attached to the inner sidewall of the carrier 522 by clamping, bonding, or other means. The inner side wall of the carrier 522 may be understood as the side of the carrier 522 facing the lens 51.
With continued reference to fig. 5 and with reference to fig. 3, the driving housing 521 has a first relief opening 5214 on the light incident side of the lens 51, and the shape of the first relief opening 5214 is adapted to the shape of the circumferential outer wall of the lens 51. Illustratively, the first relief port 5214 can be a circular port. The portion of the lens 51 exposed outside the carrier 522 may be disposed in the first avoiding opening 5214 and located outside the driving housing 521, so that the light outside the electronic device 100 can enter the lens 51 through the lens cover 21 mentioned above, and meanwhile, the assembly of the lens 51 on the driving housing 521 can be achieved, so that the local thickness of the image capturing module 5 and the assembly space of the image capturing module 5 in the electronic device 100 are reduced, which is beneficial to achieving the light and thin of the electronic device 100.
With continued reference to fig. 5, the driving housing 521 further has a second avoiding opening 5215 on the light emitting side of the lens 51, so that the light emitted from the light emitting side of the lens 51 may be emitted into the optical filter 53 and the image sensor 54 of the image capturing module 5 through the second avoiding opening 5215, so as to implement the capturing function of the image capturing module 5. The second relief opening 5215 may be adapted to the shape of the circumferential outer wall of the lens 51. The shape of the second avoiding opening 5215 can be the same as the first avoiding opening 5214, and will not be described herein.
Referring to fig. 6, the driving device 52 further includes an abnormal sound suppressing member (not shown)) The abnormal sound suppressing member is located at a side of the carrier 522 in the first direction and between the carrier 522 and the inner wall of the driving housing 521 so that the carrier 522 faces the side (e.g., Z + Direction), the abnormal sound suppression component can reduce the abnormal vibration generated by the impact of the carrier 522 and the driving housing 521 of the driving device 52, thereby achieving the effect of suppressing the abnormal vibration.
The structure of the abnormal sound suppressing member is further described below.
With continued reference to fig. 6, the abnormal sound suppression assembly includes a magnetic field piece 523 and an energized conductor 524, where the magnetic field piece 523 may be understood as a structural member capable of generating a magnetic field. Energizing conductor 524 may be understood as a conductor capable of energizing, and energizing conductor 524 may be a conductor made of copper or other metal capable of energizing. The magnetic field 523 and the current-carrying conductor 524 will be further described below. One of the magnetic field piece 523 and the energizing conductor 524 is fitted to the carrier 522, and the other is fitted to the drive housing 521, so that the fitting of the abnormal sound suppression assembly in the drive housing 521 is achieved.
Fig. 7 shows a schematic diagram of a magnetic field generated by the magnetic field element 523, and does not limit the direction of the magnetic field generated by the magnetic field element 523. Referring to fig. 7, the magnetic field element 523 generates a magnetic field, and fig. 8 shows a schematic diagram of the magnetic field generated by the current-carrying conductor 524. With continued reference to fig. 8 in conjunction with fig. 6, the energized conductor 524 is configured to be electrically coupled to a side of the carrier 522 that is opposite the abnormal sound suppression assembly in a first direction (e.g., Z-direction + Direction) moves beyond a preset stroke, a magnetic field is generated in opposition to the magnetic field member 523 to drive the reduction of the impact force of the carrier 522 against the drive housing 521. For example, when the direction of the magnetic field generated by the magnetic field element 523 is as shown in fig. 7, the direction of the magnetic field generated by the current-carrying conductor 524 may be as shown in fig. 8.
The preset stroke can be understood as that when the lens 51 moves along the optical axis direction to implement the focusing function of the camera module 5, the carrier 522 moves in the first direction (e.g. Z + Direction and Z - Direction) of travel range of movement. The preset travel may also be different for different sized drives 52, and is not particularly critical in this applicationAnd (3) limiting.
With continued reference to fig. 7 and 8, since the current-carrying conductor 524 generates a magnetic field that is opposite to the magnetic field of the magnetic field member 523, that is, the current-carrying conductor 524 generates a magnetic field that is opposite in polarity to the magnetic field of the magnetic field member 523, the magnetic field direction is also opposite. Due to the magnetic field generated by the current-carrying conductor 524 and the magnetic field of the magnetic field element 523, a repulsive force is generated between the current-carrying conductor 524 and the magnetic field element 523, and the repulsive force moves away from each other between the current-carrying conductor 524 and the magnetic field element 523.
At the same time, since one of the magnetic field element 523 and the current-carrying conductor 524 is mounted to the carrier 522 and the other is mounted to the drive housing 521, the repulsive force generated will also act on the carrier 522 and the drive housing 521, respectively. Since the drive housing 521 is stationary, the repulsive force applies a reverse acceleration to the carrier 522 such that the carrier 522 has a side facing away from the abnormal noise suppression assembly in a first direction (e.g., toward Z - Direction) to have certain offset effect to the acceleration when carrier 522 moves towards the side that abnormal sound suppression subassembly was located, thereby reduce carrier 522 and the speed and the impact force when driving housing 521's inner wall striking, reach the purpose that reduces the drive arrangement 52 and be in the abnormal sound that rocks the scene and produce, realize the suppression effect to rocking the abnormal sound, promote the user and experience electronic equipment 100's use.
Because circular telegram conductor 524 is when carrier 522 moves more than the stroke of predetermineeing towards the one side that abnormal sound suppression subassembly was located, just produce with the magnetic field piece 523 magnetic field, consequently, this application is through the setting of abnormal sound suppression subassembly, when realizing the suppression effect to rocking the abnormal sound, can not influence the normal movement of carrier 522 in the stroke of predetermineeing in the first direction to avoid influencing the ascending removal of camera lens 51 in the optical axis, thereby avoid the setting of abnormal sound suppression subassembly to cause the influence to the focusing function of camera module 5.
Therefore, when the focusing function of the camera module 5 is realized, the abnormal sound can be restrained from shaking under the shaking scene by the aid of the abnormal sound restraining component, and the use experience of a user on the electronic equipment 100 is improved.
Fig. 9 shows the explosion of the drive 52And (5) frying the graph. Referring to fig. 9, the carrier 522 is provided with at least one set of abnormal sound suppressing members on both sides in the first direction so that the carrier 522 faces different sides (toward Z) of the carrier 522 with respect to the first direction of the driving housing 521 + Direction or Z - Direction) is moved beyond the preset stroke, the rattle abnormal sound generated when the carrier 522 hits the driving housing 521 can be reduced under the action of the corresponding abnormal sound suppressing member.
Fig. 9 shows a structure in which the carrier 522 has two sets of abnormal noise suppression components on the side in the first direction, and does not limit the structure of the driving device 52. Fig. 10 shows a partial schematic view of a drive device 52, from which a part of the drive housing 521 is drawn. Referring to fig. 10, the carrier 522 may also have a set of abnormal sound suppression components on a side in the first direction. Alternatively, in other embodiments, the carrier 522 may also have three, four, etc. sets of abnormal sound suppression components on the sides in the first direction.
The greater the number of abnormal noise suppression components located on the same side of the carrier 522, the greater the repulsive force to the carrier 522, and the greater the reverse acceleration provided by the carrier 522 by the corresponding repulsive force, the smaller the impact force when the carrier 522 impacts the driving housing 521, and the better the abnormal noise suppression effect.
In application, the number of abnormal sound suppressing components on the same side of the carrier 522 is adjusted in response to the mechanical stroke of the carrier 522 in the first direction, so as to obtain the abnormal sound suppressing effect of the effect, and at the same time, avoid the carrier 522 from moving reversely under the action of the repulsive force and striking the driving housing 521. The mechanical stroke of the carrier 522 in the first direction may be understood as a maximum stroke in which the carrier 522 is movable in the first direction, and thus the mechanical stroke of the carrier 522 in the first direction is greater than a preset stroke. In the present application, the number of abnormal sound suppressing members on the same side as the carrier 522 is not particularly limited.
Referring again to fig. 9, when two or more sets of abnormal sound suppressing components are provided on the same side of the carrier 522, the abnormal sound suppressing components located on the same side of the carrier 522 are symmetrically disposed in the driving housing 521, so as to provide a greater reverse acceleration for the reverse motion of the carrier 522, enhance the abnormal sound suppressing effect, and enhance the stability of the carrier 522 during movement. For example, the abnormal sound suppressing members on the same side of the carrier 522 may be disposed in the driving housing 521 diagonally symmetrically.
The structure of the driving device 52 will be further described below by taking two sets of abnormal noise suppression components symmetrically disposed on the same side of the carrier 522 as an example.
Referring again to fig. 9, the inner wall of the drive housing 521 has a chute 5213 in the first direction. The carrier 522 has a slider 5221 at a position corresponding to the chute 5213. The sliding piece 5221 is installed in the chute 5213, so that when the carrier 522 is slidably assembled in the driving housing 521, the resistance of the carrier 522 when the driving housing 521 moves can be reduced, and when the carrier 522 moves in the driving housing 521, the shaking abnormal sound generated by the driving device 52 in a shaking scene can be effectively improved, and the use experience of a user on the electronic device 100 is improved. Further, by the engagement of the slider 5221 and the slide groove 5213, the movement of the carrier 522 in the first direction can be guided, and the accuracy of the movement of the lens 51 in the optical axis direction can be improved.
Two runners 5213 are shown in fig. 9 and do not constitute a limitation on the number of runners 5213. In some embodiments, the number of the sliding grooves 5213 may also be three, four, etc., and in the present application, the number of the sliding grooves 5213 is not particularly limited. When the number of the slide grooves 5213 is plural, the slide grooves 5213 can correspond to different positions of the carrier 522 in the circumferential direction to enhance the stability of the movement of the carrier 522 in the first direction.
The slide 5221 can include balls 5222, linear guides, or other sliding structures.
Referring again to fig. 9, the carrier 522 may be provided with an insertion groove 5223 at a position corresponding to the slide groove 5213, the slider 5221 (e.g., the ball 5222) may be inserted into the insertion groove 5223, and a portion of the slider 5221 protrudes out of the insertion groove 5223, so that the slider 5221 can be installed in the slide groove 5213 while the slider 5221 is assembled on the carrier 522. The linear guide may be a linear guide having balls 5222 in the related art. The linear guide may be secured to the peripheral outer wall of the carrier 522 by a snap fit, fastener, or other means. The fasteners may include screws, bolts, and the like. In the present application, the structure of the slider 5221 and the mounting manner on the carrier 522 are not particularly limited.
When the slider 5221 is a ball 5222 or a linear guide having a ball 5222, the driving means 52 may be a ball motor. According to the device and the method, the abnormal sound suppression component is arranged, so that the abnormal sound generated by the ball motor in the shaking scene can be suppressed, and the use experience of a user to the electronic equipment 100 is improved.
Referring again to fig. 9, in some embodiments, the drive housing 521 may include an upper housing 5211 and a lower housing 5212, with the upper housing 5211 and the lower housing 5212 being disposed opposite in a first direction (Z-direction) and being removably connected to facilitate assembly of a structure such as a carrier 522 within the drive housing 521. For example, the upper housing 5211 and the lower housing 5212 can be removably connected to the lower housing 5212 by a snap fit, fastener, or other means. In this application, the connection of the upper case 5211 and the lower case 5212 is not particularly limited. The first avoiding opening 5214 may be disposed on the upper housing 5211, and the second avoiding opening 5215 may be disposed on the lower housing 5212.
It should be noted that some abnormal sound suppressing components may be located between the upper housing 5211 and the carrier 522 and in the first direction of the carrier 522 to suppress the carrier 522 along the Z direction + And the shaking abnormal sound is generated when the direction movement exceeds the preset travel. Other abnormal sound suppression components may be positioned between the lower housing 5212 and the carrier 522 and in a first direction of the carrier 522 to suppress the carrier 522 along Z - And the shaking abnormal sound is generated when the direction movement exceeds the preset travel.
As shown in fig. 9 again, when the upper case 5211 and the lower case 5212 are disposed opposite to each other in the first direction, the upper case 5211 may be covered on the circumferential outer wall of the lower case 5212 such that the upper case 5211 and the lower case 5212 have an overlapping area in the first direction in order to achieve detachable connection of the upper case 5211 and the lower case 5212. Alternatively, when the upper case 5211 and the lower case 5212 are disposed opposite to each other in the first direction, the lower case 5212 may be covered on the outer circumferential wall of the upper case 5211, and the upper case 5211 and the lower case 5212 may be detachably connected to each other.
As shown again in fig. 9, the chute 5213 can be located on the inner wall of the lower housing 5212. Fig. 11 shows a partial schematic view of another driving device 52, in which the upper housing 5211 of fig. 9 is hidden so as to facilitate the observation of the internal structure of the driving device 52. Referring to fig. 11 in combination with fig. 9, the carrier 522 may be assembled within the lower housing 5212 to enable sliding placement of the carrier 522 within the lower housing 5212 by engagement of the slider 5221 with the chute 5213.
When the lower housing 5212 is covered on the circumferential outer wall of the upper housing 5211, the sliding groove 5213 may also be located on the inner wall of the upper housing 5211, and the carrier 522 may be slidably disposed in the upper housing 5211 by the sliding member 5221 and the sliding groove 5213.
The structure of the driving device 52 will be further described below taking the case where the upper case 5211 is covered on the circumferential outer wall of the lower case 5212 as an example.
The drive device 52 further comprises a drive assembly (not shown) for driving the movement of the carrier 522 in the first direction, by means of which the carrier 522 can be driven to move in the first direction relative to the drive housing 521. When the driving device 52 is applied to the camera module 5 and the electronic apparatus 100, the lens 51 can be driven by the carrier 522 to move along the optical axis direction, so as to realize the focusing function of the camera module 5.
In some embodiments, the drive assembly may employ a voice coil drive assembly, which may include a focusing coil, a magnetic member, which may include, but is not limited to, a magnet or a magnetite, and a drive circuit board 526. One of the focusing coil and the magnetic member may be located on the driving housing 521, and the other may be located on the carrier 522, which are disposed opposite to each other. The driving circuit board 526 may be mounted on the driving housing 521 and connected to the main circuit board 4 through the above-mentioned flexible electrical connection 55. For example, the driving circuit board 526 may be installed between an inner wall of the upper housing 5211 and an outer wall of the lower housing 5212. The drive circuit board 526 may be a flexible circuit board carrying a drive chip. Thus, when the electronic device 100 photographs the object, the main circuit board 4 may supply power to the focusing coil through the driving circuit board 526, so that a magnetic force is generated between the focusing coil and the magnetic field member 523, and the magnetic force can drive the focusing coil to move along the first direction relative to the magnetic field member 523.
Since one of the focusing coil and the magnetic member may be located on the driving housing 521 and the other may be located on the carrier 522, when the focusing coil moves in the first direction relative to the magnetic member 523, the carrier 522 can be driven to move in the first direction relative to the driving housing 521.
Meanwhile, the main circuit board 4 can control the current direction and the magnitude of the focusing coil through the driving circuit board 526 according to the shooting command input by the user, adjust the magnetic field direction and the magnitude of the magnetic force generated between the focusing coil and the magnetic piece, and control the moving direction and the moving amount of the focusing coil, thereby controlling the moving direction and the moving amount of the lens 51, and achieving the purpose of automatic focusing on the shooting object.
The drive assembly may also employ a drive structure having shape memory alloy (Shape Memory Alloys, SMA) wires. The driving structure is also provided with a driving circuit board 526, current can be introduced into the SMA wire through the driving circuit board 526, and the SMA wire is heated by utilizing the heating effect of the current, so that the contraction and the deformation of the SMA wire are realized. When no current flows in the SMA wire, it can return to its original state. The carrier 522 may be moved relative to the drive housing 521 in a first direction by contraction and deformation of the SMA wire. In this application, the voice coil driving assembly and the driving structure with SMA wire will not be further described, and reference may be made to related descriptions in the existing driving motor capable of implementing focusing function.
With continued reference to fig. 11 and in conjunction with fig. 9, the energized conductor 524 may be electrically connected to a drive circuit board 526 in the drive assembly to provide power to the energized conductor 524 through the drive circuit board 526. Specifically, the energizing conductor 524 has an in-line end and an out-line end, which may extend toward one side of the drive circuit board 526, respectively, and are electrically connected to the drive circuit board 526 to electrically connect the energizing conductor 524 to the drive circuit board 526 in the drive assembly.
In some embodiments, when the carrier 522 moves in the first direction towards the side where the abnormal noise suppression component is located beyond a preset stroke, the main circuit board 4 may control the driving circuit board 526 to supply power to the power-on conductor 524, and control the direction of the current in the power-on conductor 524, so that the power-on conductor 524 generates a magnetic field opposite to the magnetic field element 523, and at the same time, the influence of the power-on conductor 524 on the movement of the carrier 522 in the preset stroke can be avoided, so that the focusing function of the image capturing module 5 is ensured.
With continued reference to fig. 11, in some embodiments, the energizing conductor 524 can have a first conductor 5241 and a second conductor 5242 disconnected. One end of the first conductor 5241 and the second conductor 5242 facing the driving circuit board 526 may form an incoming line end and an outgoing line end, respectively, which are electrically conductive. The abnormal sound suppression assembly may further include a conductive member 525, the conductive member 525 being located at a disconnection of the first conductor 5241 and the second conductor 5242. The conducting member 525 is configured to conduct the first conductor 5241 and the second conductor 5242 when the carrier 522 moves in the first direction towards the side where the abnormal sound suppression component is located beyond a preset stroke, so that the conductive conductor 524 is conducted with the driving circuit board 526 and generates a magnetic field, so that a repulsive force is generated between the conductive conductor 524 and the magnetic field member 523, and the impact force generated when the carrier 522 impacts the driving housing 521 is reduced by the repulsive force, thereby achieving the purpose of reducing the abnormal vibration of the driving device 52 in a shaking scene (such as manual shaking).
It should be noted that, since the first conductor 5241 and the second conductor 5242 are conducted through the conducting element 525 only when the carrier 522 moves beyond the preset stroke, that is, when the carrier 522 does not move or the movement stroke does not exceed the preset stroke, the current-carrying conductor 524 is an open circuit between the first conductor 5241 and the second conductor 5242, at this time, the current-carrying conductor 524 and the driving circuit board 526 are in a non-conducting state, and no magnetic field is generated, so as to avoid the influence of the current-carrying conductor 524 on the movement of the carrier 522 within the preset stroke, thereby ensuring the focusing function of the camera module 5 and not influencing the power consumption of the driving device 52.
The structure of the current-carrying conductor 524 having one first conductor 5241 and one second conductor 5242 is shown in fig. 11, and is not limited to the structure of the current-carrying conductor 524. In some embodiments, the current-carrying conductor 524 may further have two or more first conductors 5241 electrically connected to the driving circuit board 526, where each first conductor 5241 of the current-carrying conductor 524 is disconnected from the second conductor 5242, and may be conducted with the second conductor 5242 through the same conducting element 525, so as to enhance the magnetic field strength generated when the current-carrying conductor 524 is conducted with the driving circuit board 526, and thus increase the repulsive force between the current-carrying conductor 524 and the magnetic field element 523, so as to obtain a better effect of suppressing the abnormal vibration.
Alternatively, in some embodiments, the abnormal noise suppression component may further include two or more current-carrying conductors 524, where each current-carrying conductor 524 in the abnormal noise suppression component may share the same conducting element 525, so that the first conductor 5241 and the second conductor 5242 in each current-carrying conductor 524 are conducted simultaneously through the conducting element 525, and a better effect of suppressing the abnormal noise caused by shaking can also be obtained. In the present application, the number of the first conductors 5241 among the current-carrying conductors 524 and the current-carrying conductors 524 in the abnormal noise suppression assembly is not particularly limited.
The structure of the driving device 52 will be further described below by taking the example that the abnormal noise suppression assembly has one energizing conductor 524 and the energizing conductor 524 has one first conductor 5241.
With continued reference to fig. 11, the first conductor 5241 can include a coil portion 5243, and the coil portion 5243 can be understood as a surface insulated conductor made of copper or other metal, wound into a ring-shaped wire winding. Conduction between the first conductor 5241 and the second conductor 5242 can be understood as conduction between the coil portion 5243 and the second conductor 5242. The coil portion 5243 is configured to generate a magnetic field (a magnetic field opposite to the magnetic field element 523) after being conducted with the second conductor 5242 so as to generate a repulsive force between the coil portion 5243 and the magnetic field element 523.
Fig. 12 shows a perspective view of the drive 52 of fig. 11. As shown in fig. 12, the coil part 5243 and the magnetic field member 523 may be disposed opposite to each other with an overlapping region in a first direction (Z direction) so that a magnetic field generated by the coil part 5243 and a magnetic field generated by the magnetic field member 523 can overlap each other in the first direction, thereby generating a repulsive force between the coil part 5243 and the magnetic field member 523, providing a reverse acceleration to the carrier 522, and reducing an acceleration and an impact force when the carrier 522 impacts the driving housing 521.
Fig. 13 shows a schematic view of the positions of the magnetic field piece 523 and the first conductor 5241. Referring to fig. 13 in combination with fig. 12, the magnetic field piece 523 may be located within a covering range of the coil portion 5243 so that the coil portion 5243 completely covers the magnetic field piece 523, ensuring that the coil portion 5243 and the magnetic field piece 523 have a large overlap area in the first direction (Z direction) to increase a repulsive force between the coil portion 5243 and the magnetic field piece 523. The coverage of the coil portion 5243 is understood to be the projection of the winding plane 5244 of the coil portion 5243 onto the carrier 522 or onto the drive housing 521 (e.g., the upper housing 5211). The winding plane 5244 of the coil portion 5243 is understood to be a plane in which the wire winding is formed when wound, and which contains a plurality of layers of annular conductors.
The first conductor 5241 can include at least one coil portion 5243. That is, the first conductor 5241 may include one coil portion 5243 shown in fig. 12, or may include two or more coil portions 5243 connected end to end, and the number of coil portions 5243 is not particularly limited in this application. When the wire diameters and the number of turns of the conductors in the coil portions 5243 are the same, the larger the number of coil portions 5243 is, the stronger the generated magnetic field is, and the larger the repulsive force is. Therefore, when the first conductor 5241 can include at least one coil portion 5243, the structure of the first conductor 5241 and the magnetic field strength of the generated magnetic field can be made more diverse so as to provide different magnitudes of reverse acceleration to the carrier 522.
Referring again to fig. 12, the second conductor 5242 can be a straight conductor and the second conductor 5242 can be considered to be the wire-out end of the energized conductor 524. By providing the linear conductors of the second conductors 5242, the structure of the current-carrying conductors 524 can be simplified while conducting the current-carrying conductors 524 to the drive circuit board 526. The second conductor 5242 can be a conductor having the same wire diameter as the first conductor 5241.
With continued reference to fig. 13, in some embodiments, the magnetic member 523 may include a magnetic member having a pair of opposite poles (N-pole and S-pole) in a first direction, where the magnetic member 523 employs a single polarity. If the magnetic field element 523 is a bipolar (having two pairs of magnetic poles opposite to each other in the first direction), a repulsive force and a attractive force are formed between the magnetic field element 523 and the magnetic field generated by the coil portion 5243, and the attractive force counteracts the repulsive force, so that it is difficult to provide the carrier 522 with a reverse acceleration. Therefore, when the magnetic element 523 is a unipolar magnetic element, only a repulsive force is generated between the magnetic element 523 and the magnetic field generated by the coil portion 5243, so as to ensure that the repulsive force can provide a reverse acceleration to the carrier 522.
In some embodiments, the magnetic field element 523 may also be an electromagnet formed of an energized coil and a core, or the like. In the present application, the structure of the magnetic field element 523 is not particularly limited. The magnetic field element 523 of the present application may be a newly added structure in the driving device 52. If the magnetic element in the voice coil driving assembly can satisfy the requirement of the magnetic element 523 for the magnetic element, the magnetic element in the voice coil driving assembly can also be used as the magnetic element 523 to simplify the structure of the driving device 52.
The structure of the driving device 52 will be further described below by taking the magnetic member 523 as a unipolar magnetic member as an example.
With continued reference to fig. 13 and with reference to fig. 11, the winding plane 5244 of the coil portion 5243 is oriented perpendicularly to the first direction, and the position of the winding plane 5244 of the coil portion 5243 relative to the first direction is defined such that the magnetic poles (N-pole and S-pole) of the magnetic field generated by the coil portion 5243 upon energization can be positioned in the first direction.
Further, the driving circuit board 526 supplies power (constant direct current, for example, 100 mA) to the coil portion 5243, and the direction of the current in the coil portion 5243 can be controlled so that the coil portion 5243 can generate a magnetic field opposite to the magnetic field element 523. At this time, the magnetic field generated by the coil portion 5243 is set to have a polarity opposite to that of the magnetic field element 523 in the first direction, and the magnetic field generated by the coil portion 5243 is the same as that of the surface facing the magnetic field element 523, so that a repulsive force can be generated between the coil portion 5243 and the magnetic field element 523 by utilizing the principle of the like-polarity repulsion. The magnetic pole on the side facing the magnetic field element 523 in the magnetic field generated by the coil portion 5243 may be an N pole or an S pole as shown in fig. 13, for example, and is not particularly limited in this application.
When the current-carrying conductor 524 generates a magnetic field, a gap is provided between the current-carrying conductor 524 and the magnetic field element 523. That is, when the current-carrying conductor 524 generates a magnetic field, any portion of the current-carrying conductor 524 (for example, the coil portion 5243 and the second conductor 5242) has a gap with the magnetic field element 523. By providing the gap, the magnetic field element 523 can be prevented from colliding with the current-carrying conductor 524, the current-carrying conductor 524 can be damaged, and the stability and the service life of the structure of the driving device 52 can be enhanced.
Since the coil portion 5243 has a larger dimension in the first direction than the other positions of the current-carrying conductor 524, when the current-carrying conductor 524 is assembled in the driving device, the coil portion 5243 has a smaller distance from the magnetic field element 523 than the other positions of the current-carrying conductor 524, and therefore, if the coil portion 5243 is controlled to have a gap h between the magnetic field element 523 when the current-carrying conductor 524 generates a magnetic field, the magnetic field element 523 can be prevented from damaging the current-carrying conductor 524. In the present application, when the current-carrying conductor 524 generates a magnetic field, the gap h between the coil portion 5243 and the magnetic field element 523 is not particularly limited, and it is only necessary to satisfy that the gap h is larger than zero in the available space of the driving case 521, and the maximum value of the gap h does not affect the generation of the repulsive force between the coil portion 5243 and the magnetic field element 523. In some embodiments, the gap h between the coil portion 5243 and the magnetic field piece 523 may be greater than 0 and less than or equal to 0.5mm. Illustratively, the gap h may be 0.05mm, 0.08mm, 0.01mm, 0.02mm, etc. In this way, the magnetic field element 523 is prevented from damaging the power-on conductor 524, and the gap h between the coil portion 5243 and the magnetic field element 523 is prevented from being excessively large, which affects the dimension (thickness) of the driving device 52 in the first direction.
Fig. 14 shows a cross-sectional view of fig. 5 in the direction B-B. Referring to fig. 14, in some embodiments, the magnetic element 523 may be mounted on one side of the carrier 522 in the first direction, and at least a portion of the magnetic element 523 is embedded in the carrier 522 to realize the mounting of the magnetic element 523 on the carrier 522. The magnetic field 523 may be integrally formed in the carrier 522, or may be located in a slot of the carrier 522, and may be fixed in the slot with the carrier 522 at the slot by interference fit, adhesion, or other manners, so as to implement the assembly of the magnetic field 523 in the carrier 522. In the present application, the manner of mounting the magnetic field element 523 on the carrier 522 is not particularly limited.
Fig. 15 shows a structure in which the magnetic field element 523 is integrally embedded in the carrier 522. Referring to fig. 15 in combination with fig. 14, the energizing conductor 524 may be attached to the inner wall of the side of the driving housing 521 facing the magnetic field member 523. For example, the current-carrying conductor 524 may be bonded to and fixed to the inner wall of the upper case 5211 or the lower case 5212 on the side facing the magnetic field element 523 by means of adhesion, engagement, welding, or the like. This facilitates the relative arrangement of the magnetic field piece 523 and the current-carrying conductor 524 in the first direction while achieving the fitting of the current-carrying conductor 524 to the drive housing 521. When the magnetic field element 523 and the current-carrying conductor 524 are disposed opposite to each other in the first direction and the position of the magnetic field element 523 is relatively fixed, the coil portion 5243 and the magnetic field element 523 can have an overlapping region in the first direction by adjusting the position of the coil portion 5243 on the inner wall of the driving housing 521.
Further, since the current-carrying conductor 524 can be bonded to the inner wall of the drive housing 521 on the side facing the magnetic field element 523, when the conductive member 525 acts on the disconnection portion between the first conductor 5241 and the second conductor 5242, the first conductor 5241 and the second conductor 5242 can be prevented from moving relative to the drive housing 521, and the conductive effect of the conductive member 525 on the first conductor 5241 and the second conductor 5242 can be enhanced.
In other embodiments, the current-carrying conductor 524 may be further mounted on one side of the carrier 522 in the first direction, and the magnetic field member 523 may be further embedded in an inner wall of the side of the driving housing 521 facing the magnetic field member 523, so that the magnetic field member 523 and the current-carrying conductor 524 may be disposed opposite to each other in the first direction. Compared with the way that the energizing conductor 524 is assembled on the carrier 522, when the energizing conductor 524 is assembled on the driving housing 521, since the driving housing 521 is a stationary member in the driving device 52, the position of the energizing conductor 524 in the driving device 52 is also relatively fixed, so that the stability of the electrical connection between the energizing conductor 524 and the driving circuit board 526 can be enhanced.
The structure of the driving device 52 will be further described below by taking the example that the current-carrying conductor 524 is mounted on the driving housing 521 and the magnetic field member 523 is mounted on the carrier 522.
Since at least part of the magnetic field member 523 is embedded in the carrier 522, that is, the magnetic field member 523 may be embedded in the carrier 522 (as shown in fig. 15) as a whole, or may be embedded in the carrier 522, the assembly position of the magnetic field member 523 relative to the carrier 522 can be more diversified, so as to adapt to the driving devices 52 with different sizes.
With continued reference to fig. 15, when the magnetic field element 523 is integrally embedded within the carrier 522, the surface of the magnetic field element 523 may be lower than the side of the carrier 522 facing the current-carrying conductor 524 or flush with the side of the carrier 522 facing the current-carrying conductor 524. Therefore, when the magnetic field member 523 is entirely embedded in the carrier 522, the magnetic field member 523 can be assembled on the carrier 522 by the dimension of the carrier 522 in the first direction, compared with the arrangement in which the part of the magnetic field member 523 is embedded in the carrier 522, so that the thickness of the driving device 52 can be reduced while ensuring the arrangement of the gap h between the coil portion 5243 and the magnetic field member 523 when the current-carrying conductor 524 generates the magnetic field.
The structure of the driving device 52 will be further described below by taking an example in which the magnetic field element 523 is integrally embedded in the carrier 522, and the surface of the magnetic field element 523 is flush with the carrier 522.
With continued reference to fig. 15, in some embodiments, the thickness d of the magnetic field 523 may be 0.3-0.5 mm. By way of example, the thickness d of the magnetic field element 523 may be 0.3mm, 0.35mm, 0.4mm, 0.5mm, etc. In this way, the repulsive force between the magnetic field element 523 and the conduction of the current can provide the carrier 522 with the required reverse acceleration, and meanwhile, the influence of the excessive thickness of the magnetic field element 523 on the magnetic field of the magnetic element or the focusing coil in the voice coil driving assembly can be avoided, so that the voice coil driving assembly can normally drive the carrier 522.
In the present application, the wire diameter and the number of turns of the conductor in the coil portion 5243 are not particularly limited as long as the required repulsive force can be satisfied. In some embodiments, when the thickness d of the magnetic field element 523 is 0.3-0.5 mm, the coil portion 5243 may be a conductor with a wire diameter of 0.05-0.06 mm, and the number of turns of the coil portion 5243 may be 180-200 turns, so that when the coil portion 5243 is electrified to generate a magnetic field, the repulsive force generated between the coil portion 5243 and the magnetic field element 523 provides a required reverse acceleration for the carrier 522, and a better vibration abnormal noise suppression effect is achieved.
With continued reference to fig. 15, the conductive member 525 is located at a side of each of the first conductor 5241 and the magnetic field member 523 facing the second conductor 5242, so that the conductive member 525 can be assembled within the driving case 521 by utilizing a difference in height of the coil portion 5243 and the second conductor 5242 in the first direction (Z direction) while the conductive member 525 is conductive to the first conductor 5241 and the second conductor 5242. Further, by limiting the position of the conductive member 525, it is possible to prevent the conductive member 525 from affecting the movement of the carrier 522 in the first direction and affecting the focusing function of the imaging module 5 when the conductive member 525 is blocked between the first conductor 5241 and the magnetic field member 523.
The assembly position and structure of the conductive member 525 are further described below with reference to the accompanying drawings.
With continued reference to fig. 15, in some embodiments, the conductive member 525 may be mounted to an inner wall of the drive housing 521. The carrier 522 is abutted against the conducting element 525 when moving towards the side where the conducting element 525 is located in the first direction beyond a preset stroke, and pushes the conducting element 525 to elastically deform towards the side where the disconnection of the first conductor 5241 and the second conductor 5242 is located, so as to conduct the first conductor 5241 and the second conductor 5242, thereby conducting the conductive conductor 524 and the driving circuit board 526, so that the conductive conductor 524 (such as the first conductor 5241) generates a magnetic field.
Meanwhile, due to the elastic deformation of the conducting element 525, the movement of the carrier 522 can be buffered, the conducting time of the conducting conductor 524 and the driving circuit board 526 can be prolonged, the purpose of prolonging the time of existence of the repulsive force between the conducting conductor 524 and the magnetic field element 523 can be achieved, so that a good vibration abnormal sound inhibiting effect can be obtained, and meanwhile, the conducting element 525 can be restored to an initial state under the action of elastic force when the carrier 522 moves reversely along the first direction, so that the conducting element 525 conducts the first conductor 5241 and the second conductor 5242 again. When the conductive element 525 is in the initial state, the conductive element 525 has a distance from the first conductor 5241 to the second conductor 5242, and the first conductor 5241 and the second conductor 5242 are in a non-conductive state.
Fig. 16 shows a schematic of the positions of the conductive member 525 and the energizing conductor 524. Referring to fig. 16 in combination with fig. 15, the conductive member 525 has an elastic conductive portion 5251, and the elastic conductive portion 5251 includes a cantilever 5252 elastically connected to an inner wall of the driving housing 521 and located at a disconnection, wherein the cantilever 5252 is located at a side of the second conductor 5242 facing the carrier 522 and spaced apart from the second conductor 5242. The cantilever 5252 is configured to abut against the carrier 522 and move towards the side where the disconnection point is located under the pushing of the carrier 522, so as to conduct the first conductor 5241 and the second conductor 5242, so that the current-carrying conductor 524 can be conducted with the driving circuit board 526 only when the carrier 522 moves towards the side where the conducting piece 525 is located beyond a preset stroke, and meanwhile, due to the arrangement of the interval between the cantilever 5252 and the second conductor 5242, the current-carrying conductor 524 can be open-circuited between the first conductor 5241 and the second conductor 5242 when the carrier 522 does not move or the moving stroke does not exceed the preset stroke while achieving a good vibration abnormal sound suppressing effect.
The distance between the cantilever 5252 and the first and second conductors 5241 and 5242 depends on the degree of elastic deformation that the cantilever 5252 can undergo, and in the present application, the distance between the cantilever 5252 and the first and second conductors 5241 and 5242 is not particularly limited, as long as it is ensured that the cantilever 5252 can conduct the first and second conductors 5241 and 5242 when being moved toward the side where the break is located by the pushing of the carrier 522.
Since the cantilever 5252 is elastically coupled to the inner wall of the driving housing 521 such that the pushing of the carrier 522 to the cantilever 5252 disappears, the cantilever 5252 can also be reversely moved by the elastic force to restore the conductive member 525 to the original state so as to again conduct the first and second conductors 5241 and 5242.
With continued reference to fig. 16 in combination with fig. 15, the conductive member 525 further has a resilient arm 5256, and the resilient arm 5256 can be located on a side of the second conductor 5242 remote from the first conductor 5241 and can be mounted to an inner wall of the drive housing 521 by welding, bonding, clamping, or fastening, etc. to effect the mounting of the conductive member 525 to the drive housing 521. The other end of the elastic arm 5256 may also extend toward one side of the first conductor 5241 and connect the cantilever 5252 to achieve an elastic connection of the cantilever 5252 to the inner wall of the drive housing 521.
With continued reference to fig. 16, the cantilever 5252 can be a planar structure that covers the first and second conductors 5241, 5242 so as to increase the contact area of the cantilever 5252 with the first and second conductors 5241, 5242 and enhance the conductive effect of the cantilever 5252 on the first and second conductors 5241, 5242.
In some embodiments, with continued reference to fig. 16 in combination with fig. 15, the resilient conductive portion 5251 can further include a bending arm 5253 connected to the cantilever 5252, the bending arm 5253 including at least one bending section 5254 bent toward one side of the carrier 522. Because the carrier 522 is too fast under the scene of rocking, through the setting of buckling section 5254, when carrier 522 and the butt of buckling arm 5253, buckling section 5254 can take place elastic deformation and remove towards the department of breaking under the promotion effect of carrier 522 to drive cantilever 5252 and remove towards the one side that the department was located of breaking, in order to switch on first conductor 5241 and second conductor 5242. In the process of elastic deformation of the bending arm 5253, a certain buffer effect can be achieved on movement of the carrier 522, so that the conduction time of the electrified conductor 524 and the driving circuit board 526 is prolonged, the time that repulsive force provides reverse acceleration for the carrier 522 is prolonged, and a good vibration abnormal sound suppression effect is achieved.
One bending section 5254 is shown in fig. 16. In some embodiments, the number of bending segments 5254 can also be two or more, which is not particularly limited in this application. It should be noted that, while the movement of the carrier 522 in the preset stroke and the dimension of the driving device 52 in the first direction are not affected, the greater the number of the bending sections 5254, the better the buffering effect on the movement of the carrier 522, the longer the conduction time between the energizing conductor 524 and the driving circuit board 526, and the better the suppression effect of the rattling noise.
Referring again to fig. 15, at least one of the cantilever arms 5252 and the bending arms 5253 can be disposed in parallel over the carrier 522 so as to enable more diversification of the conductive elements 525 while conducting the first and second conductors 5241 and 5242 to meet the requirements of the driving device 52 for different structures of the conductive elements 525.
In fig. 15, the cantilever 5252 and the bending arm 5253 are shown to be disposed in parallel on the carrier 522, and at this time, the cross section of the elastic conduction portion 5251 is in a "zigzag" structure shown in fig. 15. In some embodiments, the cantilever arms 5252 or the bending arms 5253 can also be disposed at an angle to the carrier 522. Compared with the cantilever 5252 or the bending arm 5253 and the carrier 522, when the cantilever 5252 and the bending arm 5253 are arranged on the carrier 522 in parallel, due to the arrangement of the Z-shaped structure, the rigidity of the conducting piece 525 can be improved, and the better buffering effect on the movement of the carrier 522 is achieved, meanwhile, due to the fact that the cantilever 5252 is arranged on the carrier 522 in parallel, the cantilever 5252 can stably attach the first conductor 5241 and the second conductor 5242, so that the conducting effect of the first conductor 5241 and the second conductor 5242 is enhanced.
With continued reference to fig. 16, the bending arm 5253 also includes an abutment section 5255, which abutment section 5255 can be parallel to the cantilever arm 5252. The abutting section 5255 is located at a side of the bending section 5254 facing the carrier 522 and is connected to the bending section 5254, so that when the abutting section 5255 abuts against the carrier 522, the abutting section 5255 can push the bending section 5254 under the pushing of the carrier 522, so that the bending section 5254 is elastically deformed and moved towards a side of the break, and the cantilever 5252 is driven to move towards the side of the break, so as to conduct the first and second conductors 5241 and 5242.
The conducting element 525 may be a spring, which is an integral piece made of copper or other conductive metal, so as to enhance the connection strength between two adjacent parts (such as the cantilever 5252 and the bending arm 5253) of the conducting element 525 while conducting the first conductor 5241 and the second conductor 5242.
Referring again to fig. 15, the elastic conduction portion 5251 faces the carrier 522 at a distance L between one side thereof and the carrier 522 1 Can be smaller than the distance L between the coil part 5243 of the current-carrying conductor 524 and the magnetic field element 523 2 And is greater than the preset travel of the carrier 522. When the elastic conduction portion 5251 faces the carrier 522, the distance L between the carrier 522 and one side of the carrier 522 1 Less than the distance L between the coil portion 5243 of the current-carrying conductor 524 and the magnetic field element 523 2 When in use, the elastic conduction portion 5251 can be directed to one end of the carrier 522 (e.g. bentThe arm 5253) protrudes from the coil portion 5243 in the first direction (Z direction) to ensure that the carrier 522 can preferentially abut against the elastic conduction portion 5251 when the carrier 522 moves in the first direction toward the side where the abnormal noise suppression assembly is located.
And, due to the distance L between the side of the elastic conduction portion 5251 facing the carrier 522 and the carrier 522 1 The current-carrying conductor 524 is larger than the preset stroke of the carrier 522, and can be ensured to be open-circuited between the first conductor 5241 and the second conductor 5242 when the carrier 522 is not moved or the movement stroke does not exceed the preset stroke, so that the normal movement of the carrier 522 in the preset stroke is ensured, and the focusing function of the camera module 5 is realized.
When the magnetic field member 523 is entirely embedded in the carrier 522 and the surface of the magnetic field member 523 is lower than the surface of the carrier 522, the elastic conduction portion 5251 faces the carrier 522 and is away from the carrier 522 by a distance L 1 May be smaller than the distance between the coil portion 5243 and the carrier 522 to ensure that the elastic conduction portion 5251 protrudes from the coil portion 5243 in the first direction (Z-direction) toward one end of the carrier 522.
In other embodiments, the conducting member 525 may be further mounted on the carrier 522, and configured to conduct the first conductor 5241 and the second conductor 5242 when the carrier 522 moves towards the side of the conductive conductor 524 in the first direction beyond a preset stroke, so that the conductive conductor 524 and the driving circuit board 526 can be conducted, and the inhibiting effect of abnormal vibration is achieved, and meanwhile, normal movement of the carrier 522 in the preset stroke in the driving housing 521 is not affected, so as to ensure the focusing function of the camera module 5.
When the conductive element 525 is assembled on the carrier 522, the distance between the conductive element 525 and the second conductor 5242 and the distance between the conductive element 525 and the first conductor 5241 at the disconnection point are larger than the preset travel distance of the carrier 522, so as to ensure that the current-carrying conductor 524 is open between the first conductor 5241 and the second conductor 5242 when the carrier 522 is not moved or the travel distance is not beyond the preset travel distance. At this time, the conducting element 525 may be conductive foam, metal element, elastic sheet or other conductive structures, so as to conduct the first conductor 5241 and the second conductor 5242, and meanwhile, the structure of the conducting element 525 may be diversified to adapt to the driving device 52 with different structures. When the conducting element 525 can be conductive foam and an elastic sheet, the conductive foam and the elastic sheet can be elastically deformed, so that a certain buffer effect can be achieved on the movement of the carrier 522, and a good shaking abnormal sound inhibition effect is achieved.
In order to verify the magnitude of the reverse acceleration generated by the abnormal noise suppression component on the carrier 522, the present application takes one set of abnormal noise suppression components in the driving device 52 as an example, and simulates the repulsive force generated between the magnetic field element 523 and the energized conductor 524 in the abnormal noise suppression component. The simulation conditions were that the wire diameter of the middle conductor of the coil portion 5243 was 0.05mm, the number of turns of the coil portion 5243 was 197 turns, and when a direct current of 100mA was applied to the coil portion 5243, the gap h between the coil portion 5243 and the magnetic field element 523 was 0.08mm when the first conductor 5241 and the second conductor 5242 were turned on.
Simulation results show that repulsive force is generated between the magnetic field element 523 and the current-carrying conductor 524. The repulsive force is about 23mN, and the repulsive force is about (approximately, about equal to) capable of generating a reverse acceleration of 2g to the carrier 522.
On the basis, the application provides a comparative example, and the driving device 52 of the comparative example and the driving device 52 of the application respectively perform shaking test to verify the inhibiting effect of the driving device 52 of the application on shaking abnormal sound.
The driving device 52 of this comparative example is different from the driving device 52 of the present application in that no abnormal sound suppressing member is provided. The driving device 52 of the comparative example was identical to the other test adjustments of the driving device 52 of the present application at the time of the shake test, except that the driving device 52 of the comparative example was not provided with the abnormal noise suppression assembly, and the acceleration at the time of the impact of the outer carrier 522 against the driving housing 521 was different. Other test adjustments may include, but are not limited to, the weight of the carrier 522, the sway frequency, the distance from the sound collection device, the carrier 522. For example, the weight of the driving device 52 of the comparative example was 11mN as that of the carrier 522 of the driving device 52 of the present application.
When a tester performs a shake test on the driving device 52 of the comparative example, the acceleration at which the carrier 522 hits the driving case 521 in the comparative example was 6g, and the abnormal sound at the sound pickup device was 56dB.
As can be seen from the simulation results mentioned above, one set of abnormal noise suppression components can generate approximately 2g of reverse acceleration to the carrier 522, so if two sets of abnormal noise suppression components are symmetrically disposed on either side of the carrier 522 of the driving device 52 in the first direction, the two sets of abnormal noise suppression components can generate 4g of reverse acceleration to the carrier 522, and can generate a counteracting effect on the acceleration when the carrier 522 impacts the driving housing 521, and after the counteracting, the acceleration when the carrier 522 impacts the driving housing 521 can be 2g. Therefore, when the tester performs a shake test on the driving device 52 of the present application, the carrier 522 is caused to strike the driving housing 521 with an acceleration of 2g, and the abnormal sound at the sound pickup device is 46dB.
Therefore, through the two groups of abnormal sound suppression components symmetrically arranged on the same side of the carrier 522, the acceleration of the impact driving shell 521 of the carrier 522 can be reduced by 4g, the loudness of the generated abnormal sound can be reduced by 10dB, and the carrier 522 can play a good role in suppressing the shaking abnormal sound generated when the carrier 522 shakes a scene. Thus, when the driving device 52 is symmetrically provided with two sets of abnormal sound suppressing components on either side of the carrier 522 in the first direction, the carrier 522 faces different sides of the carrier 522 in the first direction (e.g., toward Z + Direction or Z - Direction), can all effectually reduce the rocking abnormal sound that produces.
On the basis of the above, the embodiment of the application further provides a camera module 5, where the camera module 5 includes a lens 51 and a driving device 52 according to any one of the above, and the lens 51 is assembled on a carrier 522 of the driving device 52, so that when the carrier 522 moves in a first direction, the lens 51 can be driven to move along an optical axis direction, thereby realizing a focusing function of the camera module 5, and meanwhile, shake abnormal sound generated by the impact of the carrier 522 and the driving housing 521 by the driving device 52 can be reduced through the abnormal sound suppression component.
The structure of the lens 51 may be referred to in the above description, and will not be described herein.
The camera module 5 may further include the above-mentioned optical filter 53 and the image sensor 54, and the arrangement positions of the optical filter 53 and the image sensor 54 may be referred to the above description of the camera module 5 in the related art, which is not repeated herein.
The electronic equipment 100 of this application can include the casing and make a video recording module 5 above, and the module 5 of making a video recording is installed on the casing to the realization is made a video recording module 5 and is assembled on the casing, when realizing the function of focusing of making a video recording module 5, through the setting of abnormal sound suppression subassembly, can promote the user and experience electronic equipment 100's use.
It should be noted that, the assembly position and the assembly manner of the camera module 5 on the housing may be referred to related settings in the existing electronic device 100, which are not described herein.
In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
The terms first, second, third, fourth and the like in the description and in the claims of embodiments of the application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Claims (25)

1. A driving device, characterized by comprising:
a drive housing;
a carrier movably disposed in the driving housing in a first direction and configured to carry a lens; the first direction is parallel to the optical axis direction of the lens;
The abnormal sound suppression assembly is positioned at the side of the carrier in the first direction; the abnormal sound suppression assembly comprises a magnetic field piece and an energizing conductor, one of the magnetic field piece and the energizing conductor is assembled to the carrier, and the other is assembled to the driving shell; the energizing conductor is configured to generate a magnetic field opposite to the magnetic field member when the carrier moves in the first direction beyond a preset stroke toward a side where the abnormal sound suppression assembly is located, so as to reduce an impact force of the carrier on the drive housing;
the energized conductor has a first conductor and a second conductor that are disconnected;
the abnormal sound suppression assembly further comprises a conducting piece, wherein the conducting piece is located at a disconnection position of the first conductor and the second conductor and is configured to conduct the first conductor and the second conductor when the carrier moves towards one side of the abnormal sound suppression assembly in the first direction beyond the preset stroke, so that the electrified conductor generates the magnetic field.
2. The drive device of claim 1, wherein the first conductor comprises a coil portion configured to generate the magnetic field upon conduction with the second conductor.
3. The drive device according to claim 2, wherein the coil portion and the magnetic field member are disposed opposite to each other with an overlapping region in the first direction.
4. A driving device according to claim 3, wherein the magnetic field member is located within a covering range of the coil portion.
5. The drive device according to claim 2, wherein the first conductor includes at least one of the coil portions, and the second conductor is a linear conductor.
6. The drive of claim 2, wherein the magnetic field member comprises a magnetic member having a pair of poles of opposite polarity in the first direction.
7. The drive of claim 6, wherein a winding plane of the coil portion is perpendicular to the first direction.
8. The drive device according to any one of claims 1 to 7, wherein the magnetic field member is fitted to one side of the carrier in the first direction, and at least part of the magnetic field member is embedded in the carrier;
the energizing conductor is attached to an inner wall of the side of the drive housing facing the magnetic field member.
9. The drive of claim 8, wherein the conducting member is located on a side of both the first conductor and the magnetic field member that faces the second conductor.
10. The drive of claim 9, wherein the conductive member is mounted on an inner wall of the drive housing;
the carrier is abutted with the conducting piece when moving towards the side where the conducting piece is located along the first direction and exceeding the preset stroke, and pushes the conducting piece to elastically deform towards the side where the breaking part is located so as to conduct the first conductor and the second conductor.
11. The drive device according to claim 10, wherein the conduction member has an elastic conduction portion including a cantilever arm elastically connected to an inner wall of the drive housing and located at the disconnection;
the cantilever is positioned on one side of the second conductor facing the carrier and is arranged at a distance from the second conductor; the cantilever is configured to be capable of abutting against the carrier and moving toward a side where the break is located under the pushing of the carrier to conduct the first conductor and the second conductor.
12. The drive of claim 11, wherein the cantilever is a planar structure that covers the first conductor and the second conductor.
13. The drive of claim 11, wherein the resilient conductive portion further comprises a bending arm connected to the cantilever, the bending arm comprising at least one bending section bent toward one side of the carrier.
14. The drive of claim 13, wherein at least one of the cantilever arm and the bending arm is arranged in parallel over the carrier and/or wherein the bending arm is adapted to the width of the cantilever arm.
15. The drive device according to claim 11, wherein a distance between a side of the elastic conduction portion facing the carrier and the carrier is smaller than a distance between the coil portion of the energizing conductor and the magnetic field member and larger than a preset stroke of the carrier.
16. The drive device according to claim 9, wherein the conducting member is mounted on the carrier and configured to conduct the first conductor and the second conductor when the carrier moves beyond the preset stroke toward the energized conductor side in the first direction.
17. The driving device as recited in claim 16, wherein said conductive element is a conductive foam, a metal element or a spring.
18. The drive device according to any one of claims 1 to 7, wherein the current-carrying conductor has a gap between the current-carrying conductor and the magnetic field member when the magnetic field is generated by the current-carrying conductor.
19. The drive device according to any one of claims 1 to 7, wherein the carrier is provided with at least one set of the abnormal sound suppressing members on both sides of the first direction.
20. The drive of claim 19, wherein the abnormal sound suppression assemblies on the same side of the carrier are symmetrically disposed within the drive housing.
21. The drive arrangement of any one of claims 1-7, further comprising a drive assembly that drives movement of the carrier in the first direction, the drive assembly including a drive circuit board, the energized conductor being electrically connected to the drive circuit board.
22. The drive device according to any one of claims 1 to 7, wherein an inner wall of the drive housing has a slide groove in the first direction, and the carrier has a slider at a position corresponding to the slide groove, the slider being mounted in the slide groove.
23. The drive of claim 22, wherein the drive is a ball motor.
24. An imaging module comprising a lens and a drive device according to any one of claims 1 to 23, the lens being mounted to a carrier of the drive device.
25. An electronic device comprising a housing and the camera module of claim 24, the camera module being mounted to the housing.
CN202311402285.7A 2023-10-27 2023-10-27 Driving device, camera module and electronic equipment Active CN117156250B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106680963A (en) * 2017-03-24 2017-05-17 维沃移动通信有限公司 Fixing method for moveable motor device and mobile terminal
CN106990644A (en) * 2016-01-20 2017-07-28 Md脉动有限公司 Possess camera module of the ball apart from maintenance portion
CN110927918A (en) * 2019-12-27 2020-03-27 屏丽科技成都有限责任公司 Long-stroke focusing lens rapid convergence focusing method and projector applying same
US10921552B1 (en) * 2019-11-11 2021-02-16 Jahwa Electronics Co., Ltd. Autofocus apparatus and camera module including the same
CN113242378A (en) * 2021-06-18 2021-08-10 维沃移动通信有限公司 Camera module and electronic equipment
WO2022152069A1 (en) * 2021-01-13 2022-07-21 宁波舜宇光电信息有限公司 Camera module and terminal device
CN115396600A (en) * 2022-08-24 2022-11-25 Oppo广东移动通信有限公司 Voice coil motor, camera module and electronic equipment
CN218332128U (en) * 2022-09-28 2023-01-17 宁波舜宇红外技术有限公司 Focusing stroke control device and focusing stroke control circuit
CN115696046A (en) * 2022-08-24 2023-02-03 Oppo广东移动通信有限公司 Voice coil motor, camera module and electronic equipment
CN219041504U (en) * 2022-11-30 2023-05-16 北京小米移动软件有限公司 Motor, lens module and electronic equipment

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106990644A (en) * 2016-01-20 2017-07-28 Md脉动有限公司 Possess camera module of the ball apart from maintenance portion
CN106680963A (en) * 2017-03-24 2017-05-17 维沃移动通信有限公司 Fixing method for moveable motor device and mobile terminal
US10921552B1 (en) * 2019-11-11 2021-02-16 Jahwa Electronics Co., Ltd. Autofocus apparatus and camera module including the same
CN110927918A (en) * 2019-12-27 2020-03-27 屏丽科技成都有限责任公司 Long-stroke focusing lens rapid convergence focusing method and projector applying same
WO2022152069A1 (en) * 2021-01-13 2022-07-21 宁波舜宇光电信息有限公司 Camera module and terminal device
CN113242378A (en) * 2021-06-18 2021-08-10 维沃移动通信有限公司 Camera module and electronic equipment
CN115396600A (en) * 2022-08-24 2022-11-25 Oppo广东移动通信有限公司 Voice coil motor, camera module and electronic equipment
CN115696046A (en) * 2022-08-24 2023-02-03 Oppo广东移动通信有限公司 Voice coil motor, camera module and electronic equipment
CN218332128U (en) * 2022-09-28 2023-01-17 宁波舜宇红外技术有限公司 Focusing stroke control device and focusing stroke control circuit
CN219041504U (en) * 2022-11-30 2023-05-16 北京小米移动软件有限公司 Motor, lens module and electronic equipment

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